David David Lopez-Salido

Markups, gaps and the welfare costs of business fluctuations

In this paper we present a simple theory-based measure of the variations in aggregate economic efficiency: the gap between the marginal product of labor and the households consumption/leisure tradeoff. We show that this indicator corresponds to the inverse of the markup of price over social marginal cost, and give some evidence in support of this interpretation. We then show, that, with some auxilliary assumptions our gap variable may be used to measure the efficiency costs of business fluctuations. We find that the latter costs are modest on average. However, to the extent the flexible price equilibrium is distorted, the gross efficiency losses from recessions and gains from booms may be large. Indeed, we find that the major recessions involved large efficiency losses. These results hold for reasonable parameterizations of the Frisch elasticity of labor supply, the coefficient of relative risk aversion, and steady state distortions.

The Federal Reserve's Large‐Scale Asset Purchase Programmes: Rationale and Effects

We provide empirical estimates of the effect of large‐scale asset purchases (LSAPs) on longer term US Treasury yields within a framework that allows for several transmission channels including the scarcity channel associated with the preferred‐habitat literature and the duration channel associated with interest‐rate risk. We also clarify LSAPs’ role in the broader context of historical monetary policy strategy. Results indicate that LSAP‐style operations mainly impact longer term rates via the nominal term premium; within that premium, the response is predominantly embodied in the real term premium. The scarcity and duration channels both seem to be of considerable importance.

The Empirical Implications of the Interest-Rate Lower Bound

Using Bayesian methods, we estimate a nonlinear DSGE model in which the interest-rate lower bound is occasionally binding. We quantify the size and nature of disturbances that pushed the U.S. economy to the lower bound in late 2008 as well as the contribution of the lower bound constraint to the resulting economic slump. Compared with the hypothetical situation in which monetary policy can act in an unconstrained fashion, our estimates imply that U.S. output was more than 1 percent lower, on average, over the 2009{2011 period. Moreover, around 20 percent of the drop in U.S. GDP during the recession of 2008-2009 was due to the interest-rate lower bound. We show that the estimated model is capable of generating lower bound episodes that resemble salient characteristics of the observed U.S. episode, including its expected duration.

Monetary Policy and Real Borrowing Costs at the Zero Lower Bound

This paper compares the effects of conventional monetary policy on real borrowing costs with those of the unconventional measures employed after the target federal funds rate hit the zero lower bound (ZLB). For the ZLB period, we identify two policy surprises: changes in the 2-year Treasury yield around policy announcements and changes in the 10-year Treasury yield that are orthogonal to those in the 2-year yield. The efficacy of unconventional policy in lowering real borrowing costs is comparable to that of conventional policy, in that it implies a complete pass-through of policy-induced movements in Treasury yields to comparable-maturity private yields.

Government Spending and Consumption-Hours Preferences

In this paper we present two extensions that have been largely omitted in the recent literature on Bayesian estimation of DSGE models. First, we pay special attention to different forms of complementarity between consumption and hours affecting the households preferences. Second, we allow for the presence of a fraction of non-Ricardian households - i.e. that have limited access to financial markets. We show that exogenous changes in government transfers are crucial to distinguish between the two sources of comovements of consumption and hours in response to government spending shocks. The main conclusion from the estimated models is that private consumption increases after a government spending shock, when either nonseparability, non-Ricardian behavior, or both, are introduced in the model. In addition, allowing for consumption-hours complementarity leads to a small, and stable over time, estimated fraction of non-Ricardian households.

Credit-Market Sentiment and the Business Cycle

Using U.S. data from 1929 to 2015, we show that elevated credit-market sentiment in year t − 2 is associated with a decline in economic activity in years t and t + 1. Underlying this result is the existence of predictable mean reversion in credit-market conditions. When credit risk is aggressively priced, spreads subsequently widen. The timing of this widening is, in turn, closely tied to the onset of a contraction in economic activity. Exploring the mechanism, we find that buoyant credit-market sentiment in year t − 2 also forecasts a change in the composition of external finance: net debt issuance falls in year t, while net equity issuance increases, consistent with the reversal in credit-market conditions leading to an inward shift in credit supply. Unlike much of the current literature on the role of financial frictions in macroeconomics, this article suggests that investor sentiment in credit markets can be an important driver of economic fluctuations.

Understanding the New Normal: The Role of Demographics

Since the onset of the Great Recession, the U.S. economy has experienced low real GDP growth and low real interest rates, including for long maturities. We show that these developments were largely predictable by calibrating an overlapping-generation model with a rich demographic structure to observed and projected changes in U.S. population, family composition, life expectancy, and labor market activity. The model accounts for a 1?percentage point decline in both real GDP growth and the equilibrium real interest rate since 1980?essentially all of the permanent declines in those variables according to some recent estimates. The model also implies that these declines were especially pronounced over the past decade or so because of demographic factors most-directly associated with the baby boom and the passing of the information technology boom. Our results further suggest that real GDP growth and real interest rates will remain low in coming decades, consistent with the U.S economy having reached a ?new normal.?

Nominal Rigidities and the Term Structures of Equity and Bond Returns

A downward-sloping term structure of equity and upward-sloping term structures of interest rates arise endogenously in a general-equilibrium model with nominal rigidities and nonlinear habits in consumption. Countercyclical marginal costs exacerbate the procyclicality of dividends after a technology shock, and hence their riskiness, and generate countercyclical inflation. Marginal costs gradually fall after a negative technology shock as the price level increases sluggishly, so the payoffs of short-duration dividend claims (bonds) are more (less) procyclical than the payoffs of long-duration claims (bonds). The simultaneous presence of market and home consumption habits allows for uniting nonlinear habits and a production economy without compromising the ability of the model to fit macroeconomic variables.

Monetary Policy, Incomplete Information, and the Zero Lower Bound

In the context of a stylized New Keynesian model, we explore the interaction between imperfect knowledge about the state of the economy and the zero lower bound. We show that optimal policy under discretion near the zero lower bound responds to signals about an increase in the equilibrium real interest rate by less than it would when far from the zero lower bound. In addition, we show that Taylor-type rules that either include a time-varying intercept that moves with perceived changes in the equilibrium real rate or respond aggressively to deviations of inflation and output from their target levels perform similarly to optimal discretionary policy. Our analysis of first-difference rules highlights that rules with interest rate smoothing terms carry forward current and past misperceptions about the state of the economy and can lead to suboptimal performance.

Portfolio Inertia and the Equity Premium

We develop a DSGE model in which aggregate shocks induce endogenous movements in risk. The key feature of our model is that households rebalance their financial portfolio allocations infrequently, as they face a fixed cost of transferring cash across accounts. We show that the model can account for the mean returns on equity and the risk-free rate, and generates countercyclical movements in the equity premium that help explain the response of stock prices to monetary shocks. The model is consistent with empirical evidence documenting that unanticipated changes in monetary policy have important effects on equity prices through changes in risk.